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The energy efficiency is one of the important factors to prolong wireless sensor networks (WSNs) lifetime. One way to achieve the energy efficiency is by minimizing the energy dissipation during event capturing i.e. sensing an event and during event transmitting. This paper presents an energy efficient as well as reliable event transmission protocol (RE3TP) for event driven WSNs. RE3TP consist of...
Wireless Sensor Networks (WSN) consists of a large number of miniature size, low-power, smart sensor nodes interfacing with one another and deployed over a certain inaccessible geographical locale having inadequate power and storage space. Energy efficiency is a foremost concern in WSN. To maximize the network lifetime, one possible solution is to harvest energy from the ambient boundless accessible...
Energy efficiency and maximizing network lifetime are some important items in wireless sensor networks design. In this article, we proposed an efficient utilization to not only reduce consumption energy in network but also increase lifetime of the network In our design we used cooperative scheme to save more energy compared with direct transmission. The processed data from cluster head which is the...
Several recent works propose mobile sink based data gathering approaches to distribute energy consumption in Wireless Sensor Networks. However, mobility based algorithms require the sink to periodically update its location to the network to ensure multi-hop connectivity. This additional information increases the control traffic overhead, and thus energy consumption also increases. In this paper, we...
When we try to use a sensor network outdoors, for purposes such as collecting information related to large-scale natural disasters and agricultural applications, it often happens that the communication distance is insufficient. Many sensor network users in Japan utilize sensor nodes that use 2.4 GHz frequency. The communication distance of these sensor nodes is short (a few hundred meters). Therefore,...
This paper deals with the energy allocation in multi-hop wireless sensor networks. Because the traffic loads are not evenly distributed in a multi-hop wireless sensor network, different sensor nodes usually experience different energy consumption rates. We present Routing Independent Fair Energy-Allocation Scheme (RIFES), which allocates the available energy resource to a sensor node according to...
A society is typically driven by an economic model to manage demand, debt and distribution that is virtually analogous to the management of data, resources and routing in WSNs. In this paper, the application of such a socio-economic model is formalised as a framework to optimise resource utilisation and collaboration among sensor nodes. A specifically designed simulation platform (WSNSim) has been...
Cooperative communication has been considered as a promising method for benefiting the advantages from MIMO (multiple-input multiple-output) system for single antenna mobiles in the wireless network, and many important milestones in this area have been achieved, leading to a flurry of research activity. Especially, cooperative communication in wireless sensor networks (WSNs) has gained so much interest...
Data gathering is one of the most popular energy-efficient routing protocols in Wireless Sensor Networks (WSNs). In this research, we introduce a Dynamic Balanced Spanning Tree (DBST) for data aggregation in WSNs which considers several criteria to balance the energy consumption between sensor nodes. A cost function is presented which can follow the conditions of network. It considers various factors...
In recent years, Wireless Sensor Network (WSN) which consists of a large number of sensor nodes having wireless communication and self-organizing capability receives much attention. The design of protocols for such networks has to be energy aware in order to prolong the lifetime of the network. Multi-hop and clustering communication are most efficient routing methods in WSN. Multi-hop communication...
Due to the limited energy-source and mostly unattended nature of the wireless sensor networks, efficient use of energy has a critical importance on the lifetime of the applications accomplished by such networks. Although in most of the cases sensor nodes are battery-powered, there are application scenarios in which battery- and mains-powered nodes coexist. In this paper, we present an approach and...
Inter-cluster communication technique is drawing immense research interest in recent wireless sensor network (WSN) applications. Since sensor nodes are very much constrained in power supply, extending lifetime of these sensors is essential. On the other hand, it is difficult to provide reliable data transfer in WSNs because of their unreliable link quality and congestion at a cluster head (CH) node...
A critical issue in wireless sensor networks is an energy-efficiency since the sensor batteries have limited energy power and, in most cases, are not rechargeable. The most practical manner relate to this issue is to use a node wake-up scheduling protocol that some sensor nodes stay active to provide sensing service, while the others are inactive for conserving their energy. Especially, CTC (Connected...
In this paper, we study the problem of wireless sensor network design by deploying a minimum number of additional relay nodes (to minimize network design cost) at a subset of given potential relay locationsin order to convey the data from already existing sensor nodes (hereafter called source nodes) to a Base Station within a certain specified mean delay bound. We formulate this problem in two different...
There have been many geographic multicasting protocols proposed for wireless sensor networks (WSNs). These protocols tend to exploit a SOurce-initiated Geographic Multicasting (SOGM) approach which consists of three phases: first, a source collects the position information of all sink nodes; second, the source constructs a multicast tree through the position information; third, the source forwards...
Aiming at counterbalancing the energy consumption of the nodes in wireless sensor network, and preventing the emerging of energy hole, this paper proposes a balance strategy of energy consumption, which depends on double-deploy of the nodes, namely committing the deploy of sensor nodes in every layers according to their different functions. Compared with single irregular deploy, sensing nodes and...
In this paper, we present an asymmetric topology control (ATC) algorithm for wireless sensor networks. In this algorithm, the sensor nodes incrementally adjust their transmission. The algorithm had three phases of Neighbor Discovery, Construct Topology, and Data Transmission. In the phase of Neighbor Discovery, the nodes exchanged their positions and maximum transmission powers. In phase II, each...
Wireless Sensor Networks (WSNs) are immensely deployed for monitoring information like humidity, temperature and soil fertility. As the sensor nodes sense data and floods them in the network, the network traffic increases and may result in congestion which leads to broadcast storm problem. This paper addresses the utility of network coding to optimize data aggregation and to decrease the number of...
In Wireless Sensor Network (WSN), Device placement is a key factor for determining the coverage, connectivity, cost and lifetime. Managing the sensor nodes is not much easy while comparing mobile Ad-Hoc Networks. But the same approach can be implemented to manage the WSN. Addressing the management of the whole network is omitted and a probabilistic scheme where only a subset of nodes is managed is...
Lifetime extension is a key design issue for wireless sensor networks (WSN) with battery-operated nodes. Compared with direct transmission, transmission power can be significantly reduced by cooperative communication, because it can effectively mitigate multi-path fading by introducing space diversity. In this paper, BER analysis for M-PSK and M-QAM modulation in noncooperative and cooperative situations...
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